Linux after Windows 7

I want to install linux next to my Windows 7 Ultimate x64 and changed my windows partition from 700GB to 100GB. Now I want to use the other 600GB for linux and formatted it in Paragon Partition manager.

But when I try to install OS 11.4 I get the message that it can’t resize the partition because of the type (which is NTFS) and it wants to delete the whole disc including the windows partition. How do I fix this? Do I need to delete the 600GB partition again in Paragon so its unallocated and then use Suse on it?

Or can I better first install Linux and then Windows? (for next time so it would be nice if the above worked out)

Thanks!

Delete the partition that you have created for linux and leave this as unallocated space - then try again to install opensuse. it should then automatically use the unallocated space.